Phosphor and light emitting device

1. A phosphor expressed in a following chemical formula: L x M y C z1 N z2 :A a, wherein L is at least one member selected from the group consisting of an alkaline earth metal, Cu, Ag, Au, Sc, Y, La, Ti, Zr, V, Mn, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn; M is at least one member selected from the group consisting of B, Si, P, S, F, Cl, I, and Se; and A is at least one member selected from the group consisting of an alkaline rare earth metal and a transition metal, and wherein 0<x≦5, 0≦y≦5, 1≦z1≦10, 1≦z2≦10, and 0<a≦1, and wherein the chemical formula is expressed as Ba(CN) 2 :Eu 2+ .

2. The phosphor according to claim 1 , wherein the phosphor generates light in a wavelength range of about 520 nm to about 680 nm.

3. A phosphor expressed in a following chemical formula: L x M y C z1 N z2 :A a , wherein L is at least one member selected from the group consisting of an alkaline earth metal, Cu, Ag, Au, Sc, Y, La, Ti, Zr, V, Mn, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn; M is at least one member selected from the group consisting of B, Si, P, S, F, Cl, I, and Se; and A is at least one member selected from the group consisting of an alkaline rare earth metal and a transition metal, wherein 0<x≦5, 0≦y≦5, 1≦z1≦10, 1≦z2≦10, and 0<a≦1, and wherein the chemical formula is expressed as Zn(CN) 2 :Mn 2+ .